If Deathwing will not be 50xtimes harder than what already is, i will not even wink at WoW 
Cataclysm started off as a challenge, and ended up like WotLK.
Are you shocked by that? I mean seriously... WERE YOU SHOCKED?
Not really since I smelled that and left the game early.
As for pugs in raids, the key point is knowing what to do. No need to be a pro if you know your stuff.
Been in hundreds of pugged raids.
You will be surprised if complete noobs kill Deathwing from Raid Finder Pug ? I won't.
I am glad I left the game when it still posed a little challenge. What i read later on with the changes was a complete disaster, my only enjoyment is that Shamans got a little more dangerous against groups and are no longer single target killers, now they can handle larger groups at equal level as mages do or locks or even retridins.
The Entire idea behind Cataclysm was to give us the challenge back, apparently the noobs voices were loud enough to make it stop.
YAA
Worgen get their mounts at last.
Blizzard promised before Cataclysm that the Worgen will have Warpigs, and now, they get Horses...
Awesome, yet another reason for me to not return to the game ahahahahahahahahaha
h !